期刊
CATALYSIS TODAY
卷 364, 期 -, 页码 164-171出版社
ELSEVIER
DOI: 10.1016/j.cattod.2020.07.003
关键词
Ordered carbonaceous frameworks; Iron porphyrin; CO2 reduction; Carbon catalyst; XAFS
资金
- JST CREST [JPMJCR18R3]
- JSPS KAKENHI [19K15281]
- Japan Synchrotron Radiation Research Institute (JASRI) [2019A1617, 2019B1159]
- EPSRC [EP/P020194/1]
- QMUL Research-IT
- EPSRC [EP/P020194/1] Funding Source: UKRI
- Grants-in-Aid for Scientific Research [19K15281] Funding Source: KAKEN
Iron-incorporated ordered carbonaceous frameworks were synthesized by pyrolysis of iron porphyrin with ethynyl groups, showing efficient cross-linking upon thermal polymerization and electrocatalytic activity for CO2 conversion to CO.
Iron-incorporated ordered carbonaceous frameworks (OCFs) have been synthesized by the pyrolysis of iron porphyrin with ethynyl groups as polymerizable/carbonizable moieties at a temperature higher than 600 degrees C. The pyrolysis behavior is analyzed by thermogravimetry-differential thermal analysis-mass spectrometry, and the obtained carbon materials are characterized by X-ray diffraction, X-ray absorption fine structure, and high-angle annular dark-field scanning transmission electron microscopy. The introduction of ethynyl groups at the meta positions of the peripheral phenyl groups is essential for efficient cross-linking upon thermal polymerization. The thermally stable polymer thus obtained can be transformed into OCFs with high carbonization yield of 93 % at the subsequent carbonization. OCFs possess periodic structural regularity and porphyrin Fe-N-4 coordination structure, and exhibit electrocatalysis for the conversion of CO2 into CO.
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